package com.hmdp.service.impl;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.bean.copier.CopyOptions;
import cn.hutool.core.util.RandomUtil;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hmdp.dto.LoginFormDTO;
import com.hmdp.dto.Result;
import com.hmdp.dto.UserDTO;
import com.hmdp.entity.User;
import com.hmdp.mapper.UserMapper;
import com.hmdp.service.IUserService;
import com.hmdp.utils.RedisConstants;
import com.hmdp.utils.RegexUtils;
import com.hmdp.utils.UserHolder;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import javax.servlet.http.HttpSession;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;

import static com.hmdp.utils.RedisConstants.LOGIN_CODE_KEY;
import static com.hmdp.utils.RedisConstants.LOGIN_USER_KEY;

/**
 * <p>
 * 服务实现类
 * </p>
 *
 * @author 虎哥
 * @since 2021-12-22
 */
@Service
@Slf4j
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements IUserService {

    @Resource
    private StringRedisTemplate stringRedisTemplate;

    @Override
    public Result sendCode(String phone, HttpSession session) {
//        1、校验手机号
        if (RegexUtils.isPhoneInvalid(phone)){
//        2、不符合就返回错误信息
            return Result.fail("手机号格式错误");
        }
//        3、符合生成验证码
        String code = RandomUtil.randomNumbers(6);
//        4、保存验证码到redis
        stringRedisTemplate.opsForValue().set(LOGIN_CODE_KEY +phone,code,2, TimeUnit.MINUTES);
//        5、发送验证码
        log.debug("发送短信验证码成功，验证码：{}",code);
//        6、返回ok

        return Result.ok();
    }

    @Override
    public Result login(LoginFormDTO loginForm, HttpSession session) {
//        1、校验手机号
        String phone=loginForm.getPhone();
        if (RegexUtils.isPhoneInvalid(phone)){
//        2、不符合就返回错误信息
            return Result.fail("手机号格式错误");
        }
        String code =(String) stringRedisTemplate.opsForValue().get(LOGIN_CODE_KEY+phone);
        String loginCode = loginForm.getCode();
        if (code==null || !code.equals(loginCode)){
            return Result.fail("验证码错误");
        }
        User user = query().eq("phone", phone).one();
        if (user==null){
            user= createUserWithPhone(phone);
        }
        String token = UUID.randomUUID().toString();
        UserDTO userDTO = BeanUtil.copyProperties(user, UserDTO.class);
        Map<String, Object> userMap = BeanUtil.beanToMap(userDTO, new HashMap<>(),
                CopyOptions.create()
                        .setIgnoreNullValue(true)
                        .setFieldValueEditor((fieldName, fieldValue) -> {
                            if (fieldValue != null) {
                                return fieldValue.toString();
                            }
                            return null;
                        }));
        stringRedisTemplate.opsForHash().putAll(LOGIN_USER_KEY+token,userMap);
        stringRedisTemplate.expire(LOGIN_USER_KEY+token, RedisConstants.LOGIN_USER_TTL,TimeUnit.MINUTES);
        return Result.ok(token);
    }

    private User createUserWithPhone(String phone) {
        User user = new User();
        user.setPhone(phone);
        user.setNickName("user_"+RandomUtil.randomString(10));
        save(user);
        return user;
    }
}
